Can we track someone using their phone numbers?

[iknowwhatyoudid]

This has been harassing someone I know with death threats and insults while the person they are targeting was someone old already and has been kind to everyone.
Thus I want to help them by asking the experts from this group.

This is the number of the perpetrator

09939885370

Thank you in advance and may God bless you more and your family.

 

[Kingking3]

IPA nbi nlng Yan ts blotter mo nlng .

 

[Tobirama_Senju]

I think not enough po ang number lang to track someone. need connection mismo sa device